public static void main(String[] args) throws Exception {

         //爬虫访问接口地址

         String req_url = "http://192.168.1.105:8080/crwalTask/findUrlExceptionById?ctId=ctIdVal&time=timeVal&limit=limitVal";

         JSONArray jsonArray = httpRequest(req_url,"ba716af7-105c-481b-bf28-2e9231529947",SelectUtil.time,SelectUtil.number);//

         System.out.println(jsonArray);

     }    

 public class SelectUtil {

     public  static final String time = "2018-03-05".replaceAll(" ", "=");//按时间筛选  格式"yyyy-mm-dd"或"yyyy-mm-dd HH:mm:ss"

     public  static final int number = 162;//查询限制数量

 }

 /**

      * 获取指定任务爬取的所有url信息

      * @param req_url 访问指定任务爬取的url的链接地址

      * @param ctId 指定的任务Id

      * @param time 查询时间

      * @param limit 查询限制的条数

      * @return

      */

     public static JSONArray httpRequest(String req_url,String ctId,String time,int limit) {

         req_url = req_url.replace("ctIdVal",ctId);

         req_url = req_url.replace("timeVal",time);

         req_url = req_url.replace("limitVal",String.valueOf(limit));

         StringBuffer buffer = new StringBuffer();

         JSONArray jsonArray = null;

         try {

             URL url = new URL(req_url);

             HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();  

             httpUrlConn.setDoOutput(false);

             httpUrlConn.setDoInput(true);

             httpUrlConn.setUseCaches(false);  

             httpUrlConn.setRequestMethod("POST");

             httpUrlConn.connect();  

             // 将返回的输入流转换成字符串

             InputStream inputStream = httpUrlConn.getInputStream();

             InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");

             BufferedReader bufferedReader = new BufferedReader(inputStreamReader);  

             String str = null;

             while ((str = bufferedReader.readLine()) != null) {

                 buffer.append(str);

             }

             bufferedReader.close();

             inputStreamReader.close();

             // 释放资源

             inputStream.close();

             inputStream = null;

             httpUrlConn.disconnect();

             if("".equals(buffer.toString())){

                 String exception = "[\"exception\",\"查询的记录数超过240\"]";

                 jsonArray = JSONArray.fromObject(exception);

             }else{

                 jsonArray = JSONArray.fromObject(buffer.toString());

             }

         } catch (Exception e) {

             System.out.println(e.getMessage());

         }

         return jsonArray;

     }